Rust MCQs with answers Page - 18

Here, you will find a collection of MCQ questions on Rust. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. Which function would you use to clone a `String` in Rust?

  • (A) copy()
  • (B) clone()
  • (C) to_string()
  • (D) string()

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Q. Which type provides runtime-checked borrowing in Rust?

  • (A) Rc<T>
  • (B) RefCell<T>
  • (C) Box<T>
  • (D) Arc<T>

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Q. Which keyword is used to define a structure in Rust?

  • (A) class
  • (B) object
  • (C) struct
  • (D) data

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Q. Which syntax is correct for a mutable reference?

  • (A) &mut var
  • (B) mut &var
  • (C) &var mut
  • (D) mut var&

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Q. Which method consumes an iterator and returns the sum?

  • (A) collect()
  • (B) sum()
  • (C) count()
  • (D) fold()

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Q. What is `cargo` in Rust?

  • (A) A debugger
  • (B) A compiler
  • (C) A package manager and build tool
  • (D) A testing framework

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Q. Which command creates a new Rust project?

  • (A) rust new
  • (B) cargo init
  • (C) cargo start
  • (D) rustc new

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Q. Which of the following is used to include external crates?

  • (A) include!
  • (B) crate!
  • (C) extern crate
  • (D) use crate

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Q. Which file contains dependency declarations in a Rust project?

  • (A) dependencies.json
  • (B) Cargo.lock
  • (C) Cargo.toml
  • (D) rust.config

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Q. Which trait allows comparison using == in Rust?

  • (A) Clone
  • (B) PartialEq
  • (C) Ord
  • (D) Debug

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